This analysis reveals a micro-optofluidic sensor achieves 1212 nm/RIU sensitivity, indicating potential applications.
We report a micro-optofluidic refractive index sensor integrating a femtosecond laser-written waveguide and selectively etched channel in lithium niobate. Fabry-Pérot spectra show a 1212 nm/RIU sensitivity at 1554 nm for refractive index steps of 10⁻ 3 .
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Nwatu et al. (2025) studied this question.
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